extends Node3D

# ═══════════════════════════════════════════════════════════════
# HEX-DIAMANT-INSEL — Blockout
# Krone (begehbar): flaches 6-Eck-Tisch + 6 Trapez-Facetten zur Rundiste
# Pavillon (rein optisch): steile 6-seitige Pyramide unter der Rundiste
# ═══════════════════════════════════════════════════════════════

@export var table_radius    : float = 80.0    # flaches Sechseck in der Mitte
@export var girdle_radius   : float = 260.0   # äußerer Sechseck-Rand (Rundiste)
@export var crown_drop      : float = 30.0    # Höhenabfall Tisch -> Rundiste
@export var pavilion_depth  : float = 190.0   # Höhenabfall Rundiste -> Spitze
@export var angle_offset_deg: float = 0.0

const COLOR_TABLE    := Color(0.75, 0.74, 0.70)
const COLOR_FACET_A  := Color(0.55, 0.55, 0.48)
const COLOR_FACET_B  := Color(0.49, 0.49, 0.43)
const COLOR_PAVILION := Color(0.30, 0.28, 0.26)

func _ready() -> void:
	_build_crown()
	_build_pavilion()

func _hex_angle(k: int) -> float:
	return deg_to_rad(angle_offset_deg) + float(k) / 6.0 * TAU

func _add_tri(st: SurfaceTool, a: Vector3, b: Vector3, c: Vector3, col: Color) -> void:
	var n := (b - a).cross(c - a).normalized()
	for v in [a, b, c]:
		st.set_normal(n)
		st.set_color(col)
		st.add_vertex(v)

# ═══════════════════════════════════════════════
# KRONE — Tisch + 6 Facetten (begehbar, mit Kollision)
# ═══════════════════════════════════════════════
func _build_crown() -> void:
	var st := SurfaceTool.new()
	st.begin(Mesh.PRIMITIVE_TRIANGLES)

	var center := Vector3.ZERO
	var table_pts  : Array[Vector3] = []
	var girdle_pts : Array[Vector3] = []
	for k in range(6):
		var a := _hex_angle(k)
		table_pts.append(Vector3(cos(a) * table_radius, 0.0, sin(a) * table_radius))
		girdle_pts.append(Vector3(cos(a) * girdle_radius, -crown_drop, sin(a) * girdle_radius))

	# Tisch-Fan (Zentrum-Region)
	for k in range(6):
		var k1 := (k + 1) % 6
		_add_tri(st, center, table_pts[k1], table_pts[k], COLOR_TABLE)

	# 6 Facetten (Außenregionen), abwechselnd eingefärbt für sichtbare Nähte
	for k in range(6):
		var k1 := (k + 1) % 6
		var col := COLOR_FACET_A if k % 2 == 0 else COLOR_FACET_B
		_add_tri(st, table_pts[k],  table_pts[k1],  girdle_pts[k], col)
		_add_tri(st, table_pts[k1], girdle_pts[k1], girdle_pts[k], col)

	var mesh := st.commit()
	var mat := StandardMaterial3D.new()
	mat.vertex_color_use_as_albedo = true
	mat.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
	mat.cull_mode = BaseMaterial3D.CULL_DISABLED
	mesh.surface_set_material(0, mat)

	var body := StaticBody3D.new()
	body.name = "Crown"
	var mi := MeshInstance3D.new()
	mi.mesh = mesh
	body.add_child(mi)
	var cs := CollisionShape3D.new()
	cs.shape = mesh.create_trimesh_shape()
	body.add_child(cs)
	add_child(body)

# ═══════════════════════════════════════════════
# PAVILLON — Pyramide unter der Rundiste (rein optisch)
# ═══════════════════════════════════════════════
func _build_pavilion() -> void:
	var st := SurfaceTool.new()
	st.begin(Mesh.PRIMITIVE_TRIANGLES)

	var apex := Vector3(0, -crown_drop - pavilion_depth, 0)
	var girdle_pts: Array[Vector3] = []
	for k in range(6):
		var a := _hex_angle(k)
		girdle_pts.append(Vector3(cos(a) * girdle_radius, -crown_drop, sin(a) * girdle_radius))

	for k in range(6):
		var k1 := (k + 1) % 6
		_add_tri(st, girdle_pts[k], girdle_pts[k1], apex, COLOR_PAVILION)

	var mesh := st.commit()
	var mat := StandardMaterial3D.new()
	mat.vertex_color_use_as_albedo = true
	mat.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
	mat.cull_mode = BaseMaterial3D.CULL_DISABLED
	mesh.surface_set_material(0, mat)

	var mi := MeshInstance3D.new()
	mi.name = "Pavilion"
	mi.mesh = mesh
	add_child(mi)